set up prettier for auto-formatting

[acarl005]

This PR sets up auto-formatting for the JSON files in this repo. Note that most of the files in here follow the same formatting. There are a few that have 2-space indent instead of 4.

// prettier config
{
  "tabWidth": 4,
  "plugins": ["prettier-plugin-multiline-arrays"],
  "multilineArraysWrapThreshold": 1
}

I have tried to configure Prettier to minimize the edits here. The 2-space indented files needed to be changed. That comprises most of the changed lines. Unfortunately, a lot of the files lack a trailing newline which Prettier must add (this is not configurable).

[acarl005]

• set up prettier for auto-formatting #184 👈 (View in Graphite)
• add an AGENTS.md to the project #183
• main

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